<html>
    <head>
        <meta charset="utf-8">
        <title>首页</title>
    </head>
    <body>
        <h5>登录成功</h5>
        <div>
            <form method="get" action="/logout">
                <button type="submit">Logout</button>
            </form>
        </div>
        <hr/>
        客户端授权示例链接：
        <br/><a href="./oauth2/authorize?response_type=code&client_id=messaging-client&scope=message.read&redirect_uri=https://cn.bing.com">messaging-client</a>
    </body>
</html>